Portable stove



FIG. 1 is a top, left perspective view of a portable stove showing ournew design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a rear view thereof.

The broken lines are for illustrative purposes only and form no part ofthe claimed design.

The ornamental design for a portable stove, as shown and described.